The superior strength of the Ruger Redhawk compared to the S&W 629 has been way overemphasized, IMO. The Ruger is probably somewhat stronger, but the brass case is the weakest link in either revolver. If you were to decide to keep increasing the powder charge in your .44 Mag past the SAAMI maximum limit in your .44 Mag until you run into a problem, you would quickly reach the point where the cases stick and are very difficult to extract. At that point you are beyond any reasonable, safe, or practical limit. The Ruger may be a little stronger, but it doesn't make any real difference. It is the strength of the case that sets the pressure limit.
Some people refer to the "Ruger and Contender Only" section in the reloading manuals as proof that the Ruger is safer and stronger than the Smith. But in the manuals I have seen, the "Ruger and Contender Only" section is only for the .45 Colt, not for the .44 Mag. This is to warn shooters not to use these loads in an older Colt SAA or in one of its many clones. IIRC, not many S&W 629's (except maybe a few mountain guns) have been made in .45 Colt.
In 1985, special ordered a Redhawk. When it finally arrived at the gun shop, the owner said with a big smile, "Your revolver has the best trigger I have ever felt on a Redhawk." After I dry fired it a few times, I agreed. At local matches , I would set up a table for a long line of rubes who would pay a dollar each just to experience one dry fire let off with that excellent trigger.
But I wanted a true match quality trigger, so I took it to the most talented pistolsmith in the area. When I got it back a month later, the trigger pull was much improved. It was far better than any other Redhawk which I had ever held. I began charging the rubes at the local matches $2.00 each to try my trigger.
But no matter how many different loads I tried, I couldn't get that Redhawk to shoot good groups. So I sold it and bought a S&W 629.
Right out of the box, the 629 had a much better trigger then my former Redhawk, and the 629 shot much better groups as well.
Ruger and S&W both make high quality revolvers that usually shoot well, but I have never found any practical advantages in the alleged greater strength of Ruger revolvers. Of course, YMMV.